The "walking like Bader" got me.
In 1960-ish there was some sort of presentation which was to portay the Control Centre of the BoB to the Great British Public.
Two newly joined JPs on 1 and 54 Sqds were "specially selected" to provide the voices of the airborne pilots.
One of them had taken to walking about in the Mess in the manner of DB, and, stomping round a corner in the Mess (can't remember which one), he walked straight into an Old Bod in civvies who fell over. Much apologising and helping OB to his feet. OB muttered his acceptance of the apology, and stompted off in the manner of DB. He too had artificial legs.
JP did not repeat his party piece, and my Boss retrieved me to do more important work, like becoming operational.